AI spending added 0.9 points to Q3 US GDP growth, Morgan Stanley estimates
In brief
- Morgan Stanley estimates AI spending added 0.9 points to annualized Q3 2026 US real GDP growth.
- AI's estimated GDP contribution was 0.2 points in 2024 and 0.5 points in 2025.
- Infrastructure, not applications, drove more than three-quarters of AI's contribution, per the analysis.
- Hyperscaler capex will reach $800–900 billion in 2026 and top $1 trillion in 2027, Morgan Stanley forecasts.
Infrastructure is doing the heavy lifting
US real GDP grew at a 3.4% annualized rate in the third quarter, up from 2.2% in the second quarter, according to Crypto Briefing's report. By the outlet's own arithmetic, AI accounted for a little more than a quarter of that headline pace.
That's a big share for one theme.
Business investment rose 12.7% on an annualized basis in the quarter (contributing 1.78 percentage points to overall growth), led by data centers and AI-related infrastructure, the report said. Morgan Stanley's estimates put more than three-quarters of AI's contribution to the GDP increase in infrastructure, not applications. The bank's numbers also show AI investment's share of US growth has more than quadrupled since 2024.
Hyperscaler budgets keep climbing
Hyperscalers are the giant cloud operators (companies such as Microsoft and Google) that rent out computing power at large scale. Morgan Stanley forecasts their capital expenditures at $800–900 billion in 2026 and expects the figure to exceed $1 trillion in 2027.
Morgan Stanley CEO Ted Pick has described AI as a multi-trillion-dollar economic cycle, according to Crypto Briefing. He's put AI-related spending at around $1 trillion per year and argued the buildout is still early.
The industry is in the “second or third inning,” Pick has said.
Pick has suggested total investment over the full cycle could land between $10 trillion and $15 trillion over the next 15 to 30 years, the outlet reported. Those are his projections, not the bank's GDP estimates.
What could slow it down
So what happens if those budgets cool?
The research flagged concerns over rising Treasury yields, along with questions about whether the productivity gains will prove durable. Crypto Briefing argued that when more than a quarter of headline growth leans on one theme, a slowdown in hyperscaler budgets wouldn't stay contained to tech. That's the outlet's analysis, based on Morgan Stanley's 0.9-point estimate and the reported 3.4% growth rate.
Frequently asked questions
How much did AI spending add to US GDP growth in the third quarter of 2026?
Morgan Stanley estimates AI spending added 0.9 percentage points to annualized US real GDP growth in the third quarter of 2026, as reported by Crypto Briefing. That compares with an estimated 0.2 points in 2024 and 0.5 points in 2025.
What are hyperscalers and how much are they expected to spend?
Hyperscalers are giant cloud operators, such as Microsoft and Google, that rent out computing power at large scale. Morgan Stanley forecasts their capital expenditures at $800–900 billion in 2026 and expects that figure to exceed $1 trillion in 2027.
Why does AI's share of GDP growth raise concerns?
Crypto Briefing calculated that AI accounted for a little more than a quarter of the 3.4% headline growth pace. The outlet argued that with that much growth tied to one theme, a slowdown in hyperscaler budgets wouldn't stay contained to tech. The research also flagged rising Treasury yields and questions about durable productivity gains.
